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ARCNET UNIVERSAL LANCARD

TIARA COMPUTER SYSTEMS, INC.

ARCNET UNIVERSAL LANCARD

NIC Type

ARCnet

Transfer Rate

2.5Mbps

Data Bus

16-bit ISA

Topology

Linear Bus, Star

Wiring Type

RG--58A/U 50ohm coaxial

Unshielded twisted pair

Boot ROM

Available

BOOT ROM

Setting

JP2/I

Disabled

Open

 

Enabled

Closed

CABLE TYPE

Type

JP3

JP4

Thin Ethernet

Pins 1 & 2 closed

Pins 1 & 2 closed

 

Unshielded twisted pair

Pins 2 & 3 closed

Pins 2 & 3 closed

I/O ADDRESS SELECT

Address

JP2/A

JP2/B

JP2/C

2E0h

Closed

Open

Open

Note: All other address configurations are unspecified in manufacturer documentation. Alternate address settings should be silk-screened on the board itself.

INTERRUPT SELECT

IRQ

JP1/A

JP1/B

JP1/C

JP1/D

JP1/E

JP1/F

JP1/G

JP1/H

JP1/I

Closed

Open

Open

Open

Open

Open

Open

Open

Open

 

IRQ3

Open

Closed

Open

Open

Open

Open

Open

Open

Open

 

IRQ4

Open

Open

Closed

Open

Open

Open

Open

Open

Open

 

IRQ5

Open

Open

Open

Closed

Open

Open

Open

Open

Open

 

IRQ7

Open

Open

Open

Open

Closed

Open

Open

Open

Open

 

IRQ10

Open

Open

Open

Open

Open

Closed

Open

Open

Open

 

IRQ11

Open

Open

Open

Open

Open

Open

Closed

Open

Open

 

IRQ12

Open

Open

Open

Open

Open

Open

Open

Closed

Open

 

IRQ15

Open

Open

Open

Open

Open

Open

Open

Open

Closed

NODE ADDRESS

Node

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

0

-

-

-

-

-

-

-

-

1

On

Off

Off

Off

Off

Off

Off

Off

2

Off

Off

Off

Off

Off

Off

On

Off

3

Off

Off

Off

Off

Off

Off

On

On

4

Off

Off

Off

Off

Off

On

Off

Off

251

On

On

On

On

On

Off

On

On

252

On

On

On

On

On

On

Off

Off

253

On

On

On

On

On

On

Off

On

254

On

On

On

On

On

On

On

Off

255

On

On

On

On

On

On

On

On

Note:Node address 0 is used for messaging between nodes and must not be used.

A total of 255 node address settings are available. The switches are a binary representation of the decimal node addresses. Switch 1 is the Least Significant Bit and switch 8 is the Most Significant Bit. The switches have the following decimal values: switch 1=1, 2=2, 3=4, 4=8, 5=16, 6=32, 7=64, 8=128. Turn on the switches and add the values of the on switches to obtain the correct node address. (On=1, Off=0)

RIM BUFFER ADDRESS

Address

JP2/D

JP2/E

JP2/F

JP2/G

JP2/H

D0000h

Closed

Open

Open

Closed

Closed

Note: All other address configurations are unspecified in manufacturer documentation. Alternate address settings should be silk-screened on the board itself.

TOPOLOGY

Topology

JP5

Star

Closed

 

Linear Bus

Open